Episcopic apparatus



Aug. '8,

L. N. MESTRE EPISCOPIG APPARATUS Filed Px-i1 l' 1937 vIl Smets-Sheet 1 trol connection (exihle, electric. electroneticetaeonirol).

Whentheopentoe'ishestopesfmmthe large eid projection to the smell neid projec- 3 tion,itwillsumcetorhimtooperatetheswitch IendtheieverDtousethemotortoltert vmr in the corresponding direction, and the ensagement oftbesimft Iwiththeplate Ik; 0n theotherhenmwhensaidopertorwisheeto meiiectthei'ocussinzoftheimage.hewiilonly have to operate the switch I lndlthe lever D- tocausetheatarn upotthemotor1intbe desired direction. and the enrazement of the shaft l with the :hert Il. u Ot course other modmcationx for the remote control o! the two movement.; can be edopted. For example. for the up end down movement of the carriage. two switches can' be provided preferablyofthemckertypewithnceroren treating mechanism. Each c! said switches. et

the bezinning of its travel. controls the enguement o! the plates Il. llc. At the end of its tmvel, one ot them @arts up-tbe motor in one 'minor ydirectionwhereastheothex-zicairtsitupinthe opposite direction. Under these circumstances, it smoes for'the operator toV depress one o! thesebuttonstoobtinthemiaingorlowerinaof thecsirriagel Assoonashextopchisaction.

the movementttopelndthepietes Il, llaore ggdiennzei. -V

According to.the some modification, tvo

in: movement o! the objectives: said switches wiilbe prefmbiyoithewsh type with suto- 35 matie locking in the closed position. One of said switches will serve for the retraction of one 'of the obiectives and for this Durwse it will control. et the beginning-uf its travel, the eneasement o! the plates i0. "c and, et the end of its travel the stmmgofthemotoriothe desired direction. The other switch will correspond to the retraction of the other objective. it will also control the mage-ment of the platee ",183, but the operation et the moto:- in the a omosite direction. Gt mme the epresdon ot 'oneofthesvsitcheswiilesutbereieeseoithe other. By meen: o! this amusement the op erster always knows which obiective il' in the 'operative position.

u Inthe exemple shmithu-bex-ersumed' that the angle o! pmiection m 'the normal angle cf 9%. when this anale cannot he respecteri owinz to arrangements of the lecture roomethemrrorwilibeincnem 55 srresponnzmammdmeanembepro vided lo that the refpeefe operative picnl of the two objectives 0| and .02, mi?? have betwem them the desi-ee angle ci mccidon. ,Forenmpimcneofteobiectivesorbothcm be miniem! mowzw the :mit A. with iocicingintheseicctedpamtion. ort'minthe angie between the ttm positions o! the :heit-A ceud be varied.'

It te moreover 0mm .et the invention hu s mi? been described met mami/ed herein in m erpimstoryendnowiacmitetivemuneemd."

une? *t 3.

'thetmodinceiiom-ofdeteilcenhenadeiherdn vithootterinlitsnirit.

Icieim: LBpiseopleeppmtuxcompridngn-hciined mirrorthrowingbeekonsocreenthetnminol 5 beam iuuinziromtheiieid tobeoheerved. n

lever pivoting amt e horizontal summe pumeltothescreenxndgeesinzthrouxhtheuil of the mirror, esmsii meld objectivemdnhrn,

tieidobjective cerriedby seid pivoting leverglg mean: for controliin the pivottnrotthe @it lever 'und meen: Korf-bringing it to I. standstill either in e poaition for which the :mail iieki objectiveigiiithepethoftheluminousbeom. betweentheeidtobeoboervedondthemirror whilxttheierzeeidobicctiveioootdeotolid pemex-inopocsitiontorvhichthehrxeeid objectiveissituetcdinthepothoftheiumim beambetween themirror axuitmscx'eeu,whilstA lpilcopicopperstuscomwidnlinindmed throwingbackons'ecreenthelminam beamimngtmmenetdtobeobeernmeverf ucauydmpummecan-msenmmmea" bythirrrimsieverhedtonidmlzdle' and csrninzenmileldobiectivemdshrle nel@ objective. en eioctric `moto:- luwcrted by nid carriage and controilinz o speed reoueee. thesheitoiwhichiapebleofllidinzkmdendcomprioenetoneeudsrcluteh end, s second clutch piatetoecontmmnx the vertical movementottizecemsmetirstspindkg cxrriedbythecorriweuidnrolidedwithe clutchpletedilpodineiignmentwththerd clutch plate otthespeed reduecrlhzit. onlnl opinionkeyedtoiiixerpiznileoftheicvercnr-...gv

tying the objectives. e eecend carried bythecarriaexndpmvidedwitheeiutdxphte H mmedinsignment with theoeadciutehpiateotthespeedreucerohomepmmkexd minerauxneeanaspimsieum'nesnmfzviunil 'iixedverticurech'sndmom forcent-mutisme V sliding oi the speed reducer shertiorhdning itet'ierinitacutraipotcnorinitspm for whchitsiintclutcpstekin'mswcment uiththeeiutehprtecI-thenicimtmndie.

or inttepoeition for which its seem eicpate' is engaged with the clutch pinke-ot the ldd second' spindle, means 4im" driving the electric. motorinonedirecticnorthectimraadmeom foratomingthelevercxmimtbobm eitheinepticnrorviehtmmiield objective ixinthe path o! ehmimbcon. betweentheneldtobcowewedtmtheminw vhztthehrxeeidobiactireisoetoie'dnid pominepoeitimfervhichfeinmendd` objecttveisdtmtedinthepnhotthewminon beambetweenmemixrendtbcm-whillt 

